What color is Booklet, An Invitation to Membership, The Jewish Museum, New York, NY ?

Source Crayola® CSS3 CSS4
#2f2a34
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#7c57a3
 
#7851a9
royal purple
#6a5acd
slate blue
#663399
rebeccapurple
#c5b9ce
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver